Park tool bottom bracket bearing tool set bbt 30.4install and extract bottom bracket bearings with this bottom bracket tool set from park tool. This set includes everything required to easily tackle bottom bracket bearings in a range of bracket systems. Efficient bottom bracket bearing removalcomprised of a bottom bracket bearing remover and two bushings for fitting new bearings, the bottom bracket bearing tool set bbt 30.4 is suitable for removing and replacing bb30, pressfit 30 pf30, 386evo, bbright and pf121 systems. To remove the bearing, the remover is fed through the shell until the flat head goes into the opposite side bearing. Once engaged, the tool's plastic guide will fit into the near side shell opening to hold the tool steady while you tap the handle end firmly with a hammer, until the bearing pops out. To install new bearings, the bundled bushings are used with a head cup press not included to quickly and accurately press the bearings into the shell.this updated take on the bbt 30.3 features additional length to work with wider fat bottom bracket shells, making the bottom bracket bearing tool set bbt 30.4 a great addition to any garage or workshop.features compatibility bb30, pressfit 30 pf30, 386evo, bbright and pf121 bottom bracket systems included parts extra long bottom bracket bearing remover, 2 x bushings for use with head cup press sold separatelybuy park tool workshop from chain reaction cycles, the world's largest online bike store.